The abilities of the Fawkes were fearsome enough without also having such a change occur. If the Fawkes could become Gods so young, or if they could even just form Idols by speaking it into existence, just what kind of power would they grow into?
This was unacceptable to many, and in the end, this was the ultimate result… the death and destruction of the family.
Back then, the Four Great Families had gotten a whiff of what was going on, and they themselves had been targeted because their Heirloom Treasures were too powerful as well. Whoever received acknowledgment from these treasures could also instantly wield power that they had no business controlling.
In order to take the heat off themselves, the Four Great Families struck a deal. They would retreat from the God Realm and live out in peace in the lower Realms so long as they were given enough God Realm Incomplete Worlds. In exchange, they would help deal a crippling blow to the Fawkes.